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博碩士論文 etd-0806117-171546 詳細資訊
Title page for etd-0806117-171546
論文名稱
Title
密集小基地台下結合D2D通訊之基地台睡眠機制
Joint Device-to-Device and Small Cell On/Off with Energy Saving in Dense Small Cell
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
98
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2017-08-24
繳交日期
Date of Submission
2017-09-06
關鍵字
Keywords
服務品質、基地台睡眠機制、異質性網路、長期演進技術、D2D通訊
QoS, Small Cell On/Off, Long Term Evolution, Device-to-Device Relay, Device-to-Device communication
統計
Statistics
本論文已被瀏覽 5662 次,被下載 22
The thesis/dissertation has been browsed 5662 times, has been downloaded 22 times.
中文摘要
由於龐大的網路流量和使用者需求量日益提升,第三代合作夥伴計畫(3GPP)在Release 9中提出了異質性網路的概念,在傳統蜂巢式網路Macrocell中加入低功率的基地台來提升整個環境的吞吐量,但隨著佈署的基地台越來越多,雖然提升了整個環境的吞吐量,但是能源的耗費也相對的提升,因此節省能源耗費的議題開始備受關注,而根據研究指出行動網路中有80%的能源耗費來自於基地台[1],所以3GPP在TR36.872中定義了small cell switch on/off的技術來節能。
接著3GPP在Release 12中提出Device to Device(D2D)的通訊技術,讓兩個裝置可以直接溝通傳輸不需經過基地台,並且擁有減輕基地台負擔、降低傳輸時間、降低裝置電量消耗、重複使用cellular user的頻譜提升頻譜效益的優點,可以提升整體的吞吐量,以及在Release 13中的D2D Relay技術。
而在過往的基地台睡眠文獻中環境都只有cellular user,尚未考慮到環境中有cellular user和D2D的情境以及利用D2D Relay的技術,因此在此情境下如何挑選基地台進入睡眠,以及如何讓欲睡眠的基地台底下的cellular user及D2D換手至周遭哪個鄰近的基地台所管理服務,便成為了本篇論文所要研究的目標,提出一套基地台睡眠機制和使用者連線演算法,並設計效能函式(Utility Function)來決策讓哪個基地台進入睡眠,以及如何管理使用者該換手到周遭的哪一個基地台繼續服務,最後在結合Multi-Hop D2D Relay的技術來改善吞吐量差的Cellular User,替他們尋找適當的中繼使用者(Relay User)來轉傳資料,並最終在模擬結果顯示不論環境中的使用者(Cellular User、D2D pair)佔據比率,皆可以成功降低環境能源的消耗,並在適當的情景可以提升整體的吞吐量表現。
Abstract
Traffic volume in cellular networks has increased considerably during recent years and is expected to continue at an exponential rate. As a result, the Third Generation Partnership Project (3GPP) has proposed Heterogeneous Networks, which add low power nodes such as pico cells and femto cells to the existing Homogeneous Networks, to improve system capacity. With the wide deployment of the base station, it increases the capacity of the networks, whereas the energy consumption also increases.
In Release 12, 3GPP sets a standard of “D2D” communication technology, so that the two devices can communication directly without through the base station. In addition, D2D has the advantage of enhancing the system capacity and reducing the transmission time and device power consumption and so on. In Release 13, 3GPP proposes the concept of relaying to combine it with D2D communication, so that it can extend the network coverage further.
Of switching off base station, the scenario previous studies most consist of traditional cellular users. Therefore, in this paper we joint the D2D communication technology and D2D Relay technology. In this scenario, we consider how to select the base station into sleep mode and how to manage the users to handover to the neighbor’s base stations, so that we can achieve the better energy saving effect. We propose a BTS on/off algorithm and user association algorithm in order to have the better energy saving effect. Finally, simulation results show that the proposed methods have better energy consumption and throughput, compared with the existing methods.
目次 Table of Contents
[學位論文審定書 + i]
[論文公開授權書 + ii]
[論文摘要 + iii]
[Abstract + iv]
[目錄 + v]
[圖目錄 + vii]
[表目錄 + ix]
[第一章 導論 + 1]
[1.1 前言 + 1]
[1.2 研究動機 + 4]
[1.3 論文架構 + 6]
[第二章 相關背景與研究 + 7]
[2.1 長期演進技術(LTE)簡介 + 7]
[2.1.1 LTE系統架構 + 8]
[2.2 LTE無線存取技術 + 11]
[2.2.1正交分頻多重存取技術(OFDMA) + 11]
[2.2.2單載波分頻存取技術(SC-FDMA) + 13]
[2.2.3通道品質指標(Channel Quality Indicator,CQI) + 14]
[2.2.3資源區塊(Resource Block,RB) + 16]
[2.3 基地台睡眠省電技術(Small Cell on/off) + 18]
[2.4 Device-to-Device通訊技術介紹 + 22]
[2.4.1 D2D通訊建立流程[16] + 23]
[2.4.2 D2D Relay[20] + 25]
[2.5 相關論文 + 28]
[第三章 研究方法 + 31]
[3.1 系統架構 + 31]
[3.2 問題描述 + 33]
[3.3 流程架構 + 37]
[3.3.1機制所需資訊計算 + 37]
[3.4 基地台睡眠機制 + 39]
[3.5 改善CUE吞吐量機制 + 45]
[3.6 演算法複雜度分析 + 50]
[第四章 效能與分析 + 52]
[4.1 模擬環境與參數設定 + 52]
[4.1.1介紹模擬工具Matlab + 52]
[4.1.2模擬參數 + 52]
[4.1.3模擬環境 + 53]
[4.2 模擬結果與效能分析 + 54]
[第五章 結論 + 83]
[參考文獻 + 84]
參考文獻 References
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上網日期: 2017-03-28.
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上網日期: 2016-08-02
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[35] The simulator – MATLAB, https://www.mathworks.com/
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[37] L. Saker, S. Elayoubi and L. Rong, “Capacity and energy efficiency of picocell deployment in LTE-A networks,” IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011.
[38] 3GPP TR.136.931 V9.0.0, “Radio Frequency (RF) requirements for LTE Pico Node B,” May.2011.
[39] ETSI TS 102 706 V1.2.1, “Energy Efficiency of Wireless Access Network Equipment,” 2011.
[40] H. Shariatmadari, and S. Iraji, “Delay Analysis of Network Architectures for Machine-to-Machine Communication in LTE System,” 21St International Conference on Telecommunication(ICT), 2014.
[41] A. Kamal, and V. Mathai, “A Novel Cell Selection method for LTE HetNet,” International Conference on Communication and Signal Processing, Apr.2014.
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